shaughnessy



Jan. 8 1924,

B. F. HAUGHNESSY REFUSE INCINERATOR 7 Sheets-Sheet l Filed Oct. 2,

B. F 'hauglmessy Jan. 8 1924; 1,479,875 is. F. E-HAUGHNESSY REFUSE INCIVNLFIATOR TShewts-Sheet I Filed cs1.

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Jan. 8 1 2 a. F. SHAUGHNESSY REFUSE INCINERATOR Jan. 8 1924.

B. F. SHAUGHNESSY REFUSE INCINERATOH '7 Sheets-Sheet 5 Filed UC'C. 2, 1920 A 4 I l a yR M H L B. F. SHAUGHNESSY REFUSE INCINERATOR Filed 001;.2, 1920 7 Sheetsee 7 Patented Jan. 8, 1924 UNITED STATES BERNARD F.SHAUGHNESSY, F BROOKLYN, NEW YORK.

REFUSE INCINERATOR.

Application filed October 2, 1920. Serial No. 414,174.

To (1/! w/iom it may concern:

to it known that l, BERNARD l SHA'UGH- xi-zssr. a eitizeu of the UnitedStates, and a resident of Brooklyn, in the county of Kings and State ofNew York, have invented a new and useful Refuse Incinerator, of whichthe following is a specification.

My invention is a refuse incinerator and its all important objectresides in the provision of an apparatus that will burn or ineinerateall combustible refuse including green or wet material together with theresultant. gases, smoke and odors.

Further, my invention provides an incinerator or furnace for burningmaterial such as garbage and other waste wherein these materials arefirst dumped upon a, grate arranged above a main fire grate for dryingand burning whereby to drive off all gases, odors and smoke, andsubsequently dumped upon the main tire for further conibustion, thesegases, ctr. being circulated through the furnace until they are whollydestroyed.

My invention also embodies a refuse burner or furnace which embodies anumber of grates supported one above the other, which may be quickly andreadily dumped.

Still another object of the invention re sides in the provision of arefuse burner wherein the gases or products of ronibustion are conductedthrough separators where the heavy particles are separated from thegases and conducted to the ash pit before these burned gases havefinally passed from the burner.

It is also within the provisions of the invention to provide a refuseincinerator employing an upper and lower grate the former being watercooled to obviate being burned out due to the intense heat from the fireon the lower grate.

With the preceding and other objects and advantages in mind theinvention consists in the novel combination of elements. constructions,arrangement of parts and operations which will be hereinafter enlargedupon, claimed and illustrated in the accoun panying drawings, wherein:

" Figure 1 is a vertical sectional view of the complete apparatus;

Figure 2 is a vertical sectional view taken on line 22 of Figuie lFigure 3 is a similar view taken on line 33 of Figure l;

Figure 4 is an enlarged detail fragmentary view of one of thewater-cooled grate sections;

Figure 5 is a fragmentary horizontal sectional view of the ash orparticle collector arranged at the entrance of the rl imney of" theapparatus:

Figure 6 is a perspective of the lower grate bar latch embodied in theinvention;

Figure 7 is is a fragmentary sectional view of one of the separatorsembodied in the invention;

Figure 8 is an end elevation of the same;

Figure 9 is a vertical sectional view of a. modified embodiment. of theinvention;

Figure 10 is a fragmentary detail view of an automatic cut-off embodiedin the construetion disclosed in Figure 9;

Fig. 11 is a detail view of a valve.

1"" gure 12 is a detail fragmentary sectional view of the structureshown in Figure 9; and

Fig. 13 is an enlarged view of the furnace with adjacent parts.

Referring in detail to the drawings when in similar characters ofreference d signate eorresptmding parts throughout the several views,the numeral 5 designates a building or shed havinga loot-ti andextending heiow the floor and through the floor are d scharge pipes orhoppers: T in each of which a normally closed counter-lmlaneedswingingtrap door 8 is mounted. ()verlying the upper ends of each ofthese pipes or hoppers 7 is a hood 9 including slidable sections adaptedto he slid into one another at one side of the pipes when it is desiredto discharge the refuse on the swinging trap door.

The furnace is built up of fire brick and consists of vertically dispoed side walls and also consists of a top wall it through which the pipesor hoppers T extend and coinmunieate with the interior of the furnace.

The front and rear walls of the furnace are designated at 12. the formerbeing constructed with a passageway lit for the escape of the productsof conibustimi and from whieh the chimnev H is built. up. 'lhr rear wallis provided with doors to whereby aecess to the furnaee may be had.

The top wall 11 extends to a vertically disposed all 16 arrangedadjacent the front wall 12 and extends above this wall. This wall 16 isprovided with an outlet optnng 17 while the passageway 13 is provi e'lwith an inlet opening 18 at its top and communicating with theseopenings is :i pipe fitting 19 to conduct exhaust gases from the furnace.--;-ri es to conduct mntal woli ,"Wi to the passageway 13. A valve isand in the fitting 19 to control the er of eshaust gases to thepassageway. 1 wall 21 constitutes a forward wall of i and is built upnrc her of the furnace n u disfance of more than one-half the "ill; ofwalls 12 or 16. The wall 21 is p "sided with an opening 23 at its upperthat extends partly across the same. It some of the products ofcombustion from the fire box. This wall is also formed with smalleroutlet openings )LlO? the opening 23. Arranged below i it top wall 11 isa perfor ted top wall 22 the tire box which is supported Bind ed byhorizontally disposed tubes 23. sed between the walls It and 22 at hesides of the hoppers 7 are pairs of 5 wall. which extend from the wallit and with these walls coneways for the products of com- 111g throughthe perforated wall. on" mounted at the outer ends of eways whereby inregulate the hrough.

. .unggw at s point adjacent. the wall 16 is a \eriicul wall that stopsshort of the .op null ll. and extending from the upper 'ul of the null2.1 to this wall 24 is a hori- An air supply pipe 25 filters thecombustion chamber, as clearly h==wn in Fig. 1. Numeral 25 is a valvewhich will he described later. lilxtending t'r n wall '2! to the wall 24and to the horin.ul well :25 are vertical side walls 26. l: pt" g 26will be found in wall 21 y mounted herein a gate valve JVGI'HiHQ thepassage of smoke or from the lire held on the lower grate. J.i'vniiialor 26 is provided in wall 25. n-re is further provided an inletair pasas clearly shown in Fig. .l. The 24, 25 and 26 constitute whatmay tl-i-zneil a SUlfiiie or gas combustion fi ending the entire lengthand width of cture is a cement or concrete foundalzul disposed above thelatter and exi om the lower end of the Wall 21 to gr 1-1 is a floor 28provided with openund 3 Below the openings 30 is pit. 2'21. There isalso an inclined V which ashes fall. lielow the are longitudinal draftpassages 33 and r there is provided n 'iwuvllly direct Illeoninninicating with the fire *i ally disposed wall 3:: arranged filland extending through the walls 16 are plurality of horizontallyliscparutors and smoke or gus con- .h of these ash separators and nitsconsists of a cylindrical head 3? st one end and extending around to orgas chamber and supporiml afford a spacing ring 38 accommodated in anopening 39 in wall 35.

Arranged centrally in'the head 37 is a plurality of spiral grooves 31.For each head 37 there is provided a tube 42, which passes through walls16 and 24. The tube 42 is arranged concentrically with the horizontalaxis of the head 37 and is held in place by clip 43. Owing to the draftthrough the pipes 42, the roducts of com hustion will be concentrated atthe center of each of the heads 37. Owing to the shape of the groove 41,the products of combustion will be given a whirling motion and therebythe heavier particles are thrown outwardly and will be dischargedbetween the end of the tube 42 and head 37 and fall to the floor 28thereof. The wall 24. with the wall 16 forms a preheating and mixingchamber through which the smoke and gas are drawn from the furnace. Anair inlet 26- supplies air to the chamber for the purpose of mixing withthe gases to make the same more combustible. In other words, oxygen wiilbe mixed Witlr the gases on their way to be rehurned, the directionbeing clearly shown by the arrows in Fig. l of the drawings.

The partially burned gases from the lire on the upper grate leave thecombustion chamber by means of ports 22 and opening 23. These gases thentake the following course, as indicated by arrows in Fig. 1.

An inner valve 26 supplies air to those gases so as to make them morecombustible. These gases reach the fire on the lower grate via opening29, air passage 33 and air duct For gas which is completely burned onthe upper grate a by-pass 19 is provided. Bypass 19 is for the purposeof giving a more direct course to the chimney for gas which issufficiently burned which might be if the refuse was paper or other drymaterial. This course will then be through pipes 19, butterfly valve 20and o 'iening 8 to the chimney 14, as clearly shown by the direction ofthe arrows in Fig. l. Valve 25 functions with valve 20 and can be openedor closed to suit the course.

Journaled in bearings 44. mounted on the side walls 10 are pairs oftransversely aligned hollow rock shafts 45. Each rock shaft 45 isprovided at its outer end with a packing cylinder 46 and disposedtherein is a conduit l7 provided with u grooved head48 positionedagainst the inner end -of the cylinder 46. This conduit 47 is providedwith a longitudinal pussagelt that communicates with the rock shaft 46while tubular supporting arm 52 and supported in each pair of these arms52 is a tubular grate bar 53 whose ends extend throu h the side walls 10and are fixed for slight ateral movement therein, each of these gratebars 53 having communication with its supporting arms. Supported at eachside of the furnace are water drums 54 having communication with eachother by way of a conduit 55.

Water leaves the drum 54: by means of passage 57 then into conduit 47(see Fig. 4) thence into groove 48, thus into pipes 58 and 59, as shownby the direction of the arrows in Fig. 4. Pipes 53 and 59 are constantlybeing heated and water in these pipes will be converted into steam.Steam Wlll rise in pipe 52 and enter drum 54 by means of conduit 49 andpipe 56. The steam entering the drum 54 can be used for power purposes.

In order to swing any one or more of the grate bars from each other todump the urning material supported thereon, there is provided for eachrate bar a shaft 59 that extends longitu inall throughthe same and hasgears 60 fixed to its, opposite ends. A horizontally disposed rack bar61 is rigidly supported upon each side of the furnace and is in meshwith the gears 60. The ends of the shafts 59 project beyond the gearsand are squared as at 62, and adapted to have a wrench or crank handle63 engaged on any one of these squared ends to rotate the gears whichwill rock the shafts a sufficient distance to move the grate bar carriedby the o erated shaft.

- Inasmuch as t 'e swinging grate bars 53 are a considerable distancebelow the floor 6 I have provided a rack which is located at asufiicient distance below the hoppers 7 to catch the refuse dischargedtherefrom and thereb break the fall of the same. This rack inclu espairs of relatively heavy tubes 50 having their ends journaled in theside walls of the furnace. Each pair of these tubes is disposed belowone of the ho pers 7 and each is provided with a plura laty ofdownwardly inclined fingers 51 upon which the refuse discharged from thehoppers is supported and is subjected to the fire on the swinginggrates'53. The tubes are provided with collars 52 at their outer endsprovided' with a plurality of openings 53 adapted to be engaged by ahandle or implement whereby to rotate these tubes to any desired pointto more the fingers toward or away from each other to enable the desiredquantity of material to fall from the rack as it is burned by the fireon the swinging grates 53. If desired these tubes may be rotated to movethe fingers away from each other to permit all of the refuse to fallfrom the rack to the swinging grates below. Pipes 54; lead from theWater drums 54 to the ends of the tube 52 to moi thrsumo in the samemanner as the grate bars .725.

Below the upper grate I employ a we ondary grate which consist of pairsof rock shafts 64 having their vntls ournzzlcd in bearings 65 in theside walls 1 Loosely mounted on each of the ['(N'h' shal'h M in a pairof tubular rock shafts (it? how end project beyond the side walls in andhave worm wheels 67 fixed then-1o while one end of each of the shafts(i-l has lixoel thereto a worm Wheel 68. All of thvsr worm \"lu'vls areoperated by hand (llrl'ltllt-(l worm talHlll'; 69 mounted on the sidewalls ll). (irate 1 lo- Inents 70 are fixed to each of the tubularshafts 66 and to the central part of the shafts 64-. It will be seenthat by operating the desired worm wheel any pair or more of the grateelements may be dumped. in order to prevent the free ends of the grateelements from sagging there is provided a shaft 71 below the free end ofthe grate elements 70 and independently mounted on each of these shaftsare relatively short tubular shafts 72.

Carried by each of the shafts 72 and the central part of the shaft 71are pairs of upstanding parallel fingers 73, one pair for each pair ofgrate elements and are normally disposed in the position where the freeends of these grate elements will rest thereon. The outer ends of theshafts 71 and 72 project beyond the side walls 10 and are provided withsquared surfaces 74 adapted to receive a wrench or crank handle or thelike whereby any one or more of the shafts 71 and 72 maybe operated toswing the desired fingers 73 downwardly so that the grate elements maythen be dumped upon operation of the desired worm wheels 67 and 68.

Mounted to one side of one of the furnare walls is a vacuum producingfan designated in its entirety at 75, and leading therefrom is a pipe 76having a lateral branch 77 at its lower end that extends through one ofthe side walls 10 below the bottom 28 of the smoke or gas combustionchamber. A branch pipe 78 extends from the pipe 76 and communicates witha condenser 79. Valves 80 are arranged in the branches 77 and 78controlling communication to the flrrnace and condenser 79.

The intake of the fan is designated at 81 and communicates with thefurnace at a point between one of the side walls 10 and one ofthe walls26.

The fan is operated through any suitable driving mechanism (not shown)and.

under normal conditions draws the products of combustion upwardlythrough ,the perforated top wall 22 and outlet openings 23, thence intothe fan from where it is conducted either to the condenser 79 or back tothe furnace. In the latter case these products pass into the passageways33 and intermingle with the. combustible mixture from the pre-heatingchamber and are discharged through the ducts 34 where they are subjectedto the fire on the secondary or lower grates.

A by-pass 82 leads from one of the passageways 33 and is extendedthrough the rear wall 12 at a point between the upper and lower grates,thus some of the products of combustion passing through the passageways33 will be discharged into the fire box to cause a draft to aid thecombustion of the fire. After the burned gases are subjected to the firein the lower grate, they pass into the smoke or gas chamber a and out byway of the separating head 37,

' ing therethrough.

the latter deflecting the heavier particles to the bottom of the furnaceas hereinabove stated.

The passageway 13 is provided with'a convoluted or spiral wall 84, oneend of which projects withinthe passageway 13 in the path of the exhaustproducts pass- The opposite wall of the passageway 13 is formed with anangularly disposed deflector surface for-.

wardly of the inwardly projecting end of the convoluted or spiral wall84, thus "any' particles that may remain intermingled with the exhaustgases that pass through the separating head 37 will be deflected intothe passageway afforded by the spiral wall 84 upon contact with thedeflectqr surface 85 and will drop to the bottom of the ash pit 31 whilethe exhaust gases pass into the chimney 14- to the atmosphere.

In the course of the burned particles of combustion from the furnace tothe chimney, they pass in the direction of the arrows (see Fig. 5).

pass into 84 and dropping into the ash pit 31, while the gases pass into30 and through chimney 14. This opening 30 fromthe pit 31is a vent tolet the gases up into the chimney while the ashes remain in pit 31.

In Figure 9 Ihave illustrated modified embodiments of the inventionn'In. this construction I employ double walled watercooled side walls 86.Extending transversely.

one end of the water feed -pip e 56. A

The. coarse particles are forced to the side by a deflector 85 and checkvalve indicated at 57 is pivoted in the valve chamber and is held inopen position by a rod 58 arranged in the pipe 56 .having one endsupported by a fusible element. 59. Leading from the valve chamber 55?isa pipe 60 having two legs one leg of which extends downwardly belowthe ipe 56. It follows that should the water in the double walled jacketfall below the safety level, the tube 56 would become driedlout and uponpermitting the water to flow from the feedline in an endeavor to supplywaterto the double walled jacket this tube would break or in case thefusible.

element 59 melted before the water was again turned on the rod 58 woulddrop and permit the valve 60 to close, thus pre venting escape of hotwater and steam from the burst or broken tube.

In Figure 12 I have shown one of the tubes forming the refuse-rackassociated with the double walled water cooled fur nace. In thisinstance tubes 88' lead from the double walled side walls to the ends ofthe tube so that the water will circulate from these side walls throughthe tubes."

The water feed line' for the double walled side wallsis' indicated at61'.

It is to be understood that the forms of my invention herein shown anddescribed are to be taken as preferred examples of the same,- and thatvarious changes in the shapes. sizes and arrangement of parts may beresorted to without departing from the withthe interior of the casingand inclu in ,J'a return passage communicating with theffite box belowthe lower grate, the fan drawing the products (if combustion through thetopoflthe fire box and discharging the same below the lower grate tobereburned and subsequently returned to the gas chamher, and means toconductthe smokefrom the gas chamber to the atmosphere. I

2. A refuse furnace comprising l twe Bitcasing, afirc box in the casing,upperand lower grates in the fire box, means'fordis charging the refuseon the rates, an asli pit below the lower grate and provided withlongitudinal passagewa sopening into the fire box a fan arra'nge outsideof the casingand having an inlet communicating with t ie casingforwardly of the fire box' and having an outlet eommunicatinp; with thelongitudinal passageways whereby the gases are returned to the tire heldon the lower grate for rehurning. and means for eondur'lintf i therehurned gases lltilll the tire hox. 3. A refuse l'urnare roinprisitn,:1 turnamcasino, a tire hox in the easing. upper and lower grates in thelire hos means for dis: charging the refuse on to the grates. an :ohpit. below the lower grate and provided with longitudinal pm-sageu'aysopening into the fire box. a fan arranged out ide of the easing andhaving an inlet ronminnimiting with the casing torwurdly oi the lireinn; and having an outlet eommuniration with the longitu dinulpassageways whereby the gases are returned to the tire held n the lowergratitor I'GlJHI'IllIllj. means for i-ondurting the reburned gases fromthe tinbox. a llztlli lti' in the easing having! winnuunir'ation withthe fire box, a plurality ol' luhw having film niunieation with the(-hanilier and 'Hllllllllill rating with a ronnnon outlet. :1 tidiula rh ad at the rear end of eat-h tube. and a plurality of downwardlyilit'llllltl spiral plates extend ing through eat-h ol' the headswhereby heavy partivles an! deflerted downwardly to the bottom of theeasing during the passage of gases passing through the heads on theirWay to the eonnnon outlet.

4. A refuse furnac comprising :1. easing. n fire box arranged at one endthereof. upper and lower grates arranged therein. a gas chamber adjacentthe. tire box and int-hiding side and to Walls. i1 fan having: its inletcommunieating with the easing at one side of the gas chamber. an outletpipe leading from the fan and havin; communication with the fire boxbelow the lower grate whereby gases eondui-ted from the tire box to thefan will he returned to the lower grate for reburning, and means foreondnoting the reburned gases disrhin'ged into the gas chamber from thesame.

5. A refuse furnace comprising: a casing. 11. fire box arranged at oneend thereof. upper and lower grates arranged therein, :1 gas chamberadjacent the fire box and including side and top Walls. a fan having itsinlet communicating with the easing at one side of the gas chamber. anoutlet pipe. loading from the tan and having communication with the tirebox below the lower grate whereby gases eondueted from the fire hox tothe fan will he returned to the lower grate for rehurning. means forcondueting the .rehurned gases discharged into the eha1nher from thesame. a common gas outlet at one end of the casing, a plurality of tubescommunicating with the gas outlet; and the gas chamber, and means at therear end of the tubes to separate heavy particles from "the gases beforetheir entrance into the tubes.

6. A refuse furnace comprising a walled Hll'll llil'l. 2t uhinint-y atone end of the .strnrturr. a pipe rt'nnniuniealint! with the vhinino:and the walled strurlurtand haw in H i-onlr l va ve therein, a gasrhamlier :nljawni th tire hox. a plurality of tu es passin'r through oneend wall oi th gas lllllllllill' and ltuilllfL' i'tmlllllllll 'illlullwith the tuition-)1 niran at the rear ends or the lllittn to paratv:lHllt'S tln'rt-l'i'oni before their llilltlltt'l in o the tubes. andsuetion nit-ans tor drawin; the gases from the top of the tinlHlX andlt'llll'lllllL' the same to the tire on the lower grate for rehurning.

T. rel'nw lnrnzn-e roniprisin a walled strueturt. tranmi-rse Walls in hestrut-lure. one in" whirl: ronstitules a all of the lira liox. side andtop walls (attending from one tron-wei'w nail to lln' other. said wallsronstitulinp' a n handn-r, a liolloni lor lln stl'u 'ture .--opporledtllHHl the ground and pat-rd thrti-l'i'oni. an ash pit ratendin fromsaid wall to the rear end ol the a ing; and provided with longitudinal|I2|\.-.l fl(\\'il VS. a \I'l'lli'dllf; tllrti lrt' l llltvi'|':|i\\:i|'dl til lllt gas t'lllllillltl' and tullillllllllttll llllj.il its lower end with tlnllil szlti'tuul, a tan llilYlllL" an inlet-onnnnniratinn with the interior of th rill'llt'lllll wherein the gasesul'e drawn from the top ol the lire box and an outlet pipe leadintr fromthe ton to the pussaggi uay l-i low the iiottoni ot 'the lire hox.

8. tin im'inerutor oniprising :1 tire hrieit Hll'lH'llllt. a ehimney atone end thereof. u passageway leading from the strut-titre to theehininry. a spiral wall disposed to one side of the passageway andhaving one end thereof extended within the pusmigeu'ay. an angularldisposed liallle wall in the passageway i'em'wardly of the pit'al 'allto dellert produeis ol ((lllllHlHllUll therein to dist-barge heavypartieles to the bottom of the strut-lure while the gas passes into thechimney. and a tire hm: in the strut-titre for burning the refuse.

9. .\n iuninerator comprising a casing. a tire box in the easing, upperand lower grates in the tire hox, means For dist-harping material on theupper grate. a gas and smoke roini'utstion rhamher in tho flirniu'ehaving eommuniealion with the fire liox hetween the upper and lowergrates. a preheating and mixing rhamher through \lllt'll the smoke andgas From the upper grate pass, a ronduit. supplying airlotheniixingehamber. passage-Ways at the bottom of the mixing ehainl erand leading to the tire held on the lower n rate. and suction producingmeans communicating with the interior of the easing whereby partiallyburned products of combustion are, drawn from the upper grate to thelower grate for a second combustion, the products of combustion from thelower grate passing into the smoke and gas combus tion chamber for athird combustion.

10. An incinerator comprising a casing. a

I tire box in the casing, upper and lower grates the casing and havingan inlet tffiiiiliillii t in the fire hex. means for dischargingmateriai on the upper grate, a as and smoke combustion rho :ber in theurnace having cmnmuiiication with the fire box between the upper andiower grates, a preheating and mixing chamber through which part of thesmoke and gas from the upper grate passes. a conduit supplying air tothe mixin chem her, passageways at the bottom of t e mixing chamber andleading to a point below to the lower grates, and suction producingmeans communicating with the interior of the casing whereby to draw themajor part; of the smoke and gas from the upper grate to conduct thesame to the passage-Ways to be conducted with the preheated products tothe lower grate for a second combustion, the products of combustion fromthe lower grate passing into the smoke anrl gas combustion chamber for athird combustion, a plurality of tubes extending through the preheatingand mixing chamber and having their inner ends disposed in thecombustion chamber and the outer curls communicating with a :i5lli'10hutlet and an ash separator urranged at the inner end of each tube tosopa rote ashes from the exhaust products.

ii. .to incinerator including a casing. a tire box in the casingprovided with a pen t'mate'l ton. upper 11ml lower grates in the tireire-x. 2 1am: for discharging material on Elm upper grate, a pro-heatingand mixing hambrr in the casing through which partly burned products ofcombustion pass, means tor supplying air to the chamber, means forheating the air and products of combustion. u chamher havingcommunication With the bot tom of the fire box and the lo 'er curl ofthe pro-heating and mixing chamber, suction producing means wherebypartially burned products of combustion are drawn through the casing andto the lower grate, a smoke and gas combustion chamber adjacent to andcommunicating -with the tire box below the upper grate and adapted toreceive the products of rombue tion from the lower grate, means forsupplying air to the smoke and gas combustion chamber. and means leadingfrom the last mentioned chamber to a roinmon outlet; to coutllri theexhaust products to the atmoe' phere.

A refueo furnace comprising a casing". a ire hex at. one end thereof, aplurality of o. ular water cooled grate bars supported in the tire boxand capable of being recited, means for rocking any one or more of thegrate hers away from each other to permit the partly burned refuse tofall therefrom.

*r grate also in the tire box and upon W h the partly burned refusefalls, on ash it below the iower grate and provided with on zituiiiiial)1l.: 1LlIWlyS opening into the re box. a suction, fan arranged oiter:ie of ing with the casing box anrl having with the loo the partial thetire l burning.

13. A refuse furnace com u'ising a tire box in lar water w.

the box and forwardly of the an outlet. common 1 gitlulmal pa. gewajmicro 1v hurried guises are rcturnwl to mid on the lower grate ior r 1 ucasin the casing. a plurality of tuhu )ied grate bare sapgmrtetl in thecapa le of being i'ot'kcth VEYHJHU'S for rocking any one or more ot thegrate bars away from each other to permit the partly burned refuse tofall therefrom. a. lower grate in the tire box, a gas chamber arrangedforward of the tire box, a suction fan having its inlet communicatingwith the; rosin; at one side of the gas chamber. an outlet pipe leadingfrom the for; and having: c mmon:vation uith the tire box ow thi Billower grate whereby gases coiitiurmi from the lirc box to th fan will beI Iiitl t.

the lire llQltl on t hut. iillti means tor conducting 1h:

, from the chamber.

H. An incinerator comprising a waiter; structure. rruuawrse walls in theetrueturo. side um}. top walls cxtending from of the liillitfltl'blmalls to the other to gun flu il tjq, a bottom for the Slillt'l' pntlttt' above the ground and spam from, an ash pit rxtendin from oitransverse walls to the rear and of the at; ture and provided withlongitudinal pus sageways, a vertically disposed tme rear *ardly of thegas chamber and comm eating at its lower end with the We a suction i'anhaving coomuij with the interior of the Sliitltifflt) the go are drawnfrom (is strmrtutc. am? an outlet, pipe it the fan. to the tire held ont. e for rehurning.

n incinerator comprising a .1 lira box arranged at one eiul thereon a iiii; of tubular winging arms jouriialrrl iii sides of the her, a tubulargrate carried by each pair of arms circulating a cooling agent th andgrate bu nouns for roe or more pairs r as away from to (lump t? i burnedre'fr ba s. chamberarranger!. the tire heft. smtion pmducing, fun sourmunicating with the casing at one i of the gas chuuilz er and having anout communicating with the fi tboa: gases conducted from the the ho);will be r-turued to the lower gray homing.

16. An incinerator comprifil :5 tire box in the casing an upper eludinggrate elements mounte mo e 201st. mean; for supply ago to 'he gzuteelements. a fore.

he lower grate i wruthe fire box, a mechanism operatively on-- nected;with the grate bars whereby said grate bars may rock to permit partially' burned refuse to fall therefrom, a gas and Smoke combustion chamberin the casing having communication with the tire box between the upperand lower rates, a preheating and mixing chamber't irough which partlyburned gases from the upper grate pass, means for supplying air to themixing chamber, passageways at the bottomdof the mixin chamber, andmeans for forcing the partia ly burned gases from the upper grate and tocirculate the same through the pas sag way to the tire held on the lowergrate to: a St and combustion, the products of eomhusiinn from the lowergrate passing into the smoke and gas chamber for a third. combustion.

1?. An ii'icincrator comprising a casing, a fire box arranged therein, aplurality of movable grate bars in the *asing, a pair ot' tubular rookshafts for each grate bar journaled in the causing, a packing twopassage cylinder carried by one end of rach rock shaft, said cylinderhaving a head at one end having a circuinlereutial groove, waterreservoirs COlYllTlHlllCzti ing with the passages, vertically arrangedtubes communicating with the circumferential grooves and with the gratebars, a pair of tubular supporting arms for each grate bar havingcommunication therewith and fixed at their upper ends to the rockshafts, and means for swinging any one or more pairs of arms away fromeach other to rock the grate bars.

18. An incinerator comprising a raising, a fire box arranged therein, aplurality of movable grate bars in the casing, a pair of tubular rockshafts for each grate bar journalerl in the casing, a parking twopassage cyl inder carried by one end of each rock sh a it said cylinderhaving a head atone end having a circumferential groove, Waterreservoirs communicating with the passages, vertically arranged tubescommunicating with the rircuniferential rooves and with the grate bars,a pair 0 tubular supporting arms for each grate bar having communicationtherewith and fixed, at their upper ends to the rock shafts, means forswinging any one or more pairs of arms away from each other to rock thegrate bars, a lower grate below the grate bars, a as chamber arrangedforwardly of the %l6 box; and a Sllfiii fill pro lacing fancommunicating with the casing and having an outlet pipe communicatingwith the tire box whereby gases conducted from the tire box to the fanwill be returned to the lower grate for rebnrning.

BERNARD F. SHAUGHNESSY

